General

  • Target

    f131a0e946a38875adb5c6bbf024eca15ecbf9038be4febe09cb539190cd7062

  • Size

    245KB

  • Sample

    230218-1qkdasdf56

  • MD5

    db58fe20918f027a03873fa02d6c8b2e

  • SHA1

    2d57885cc841b38dcd6173369607a895b3dfad8d

  • SHA256

    f131a0e946a38875adb5c6bbf024eca15ecbf9038be4febe09cb539190cd7062

  • SHA512

    75462c83355e1117be061072418761bf6bf4a0f7afcbe2d0289362cf2fe487108f78b5a000ef41a71657474cc2da9ed7fecb099d160dbc4d09189ec961bfb2ea

  • SSDEEP

    3072:4E26uUALupyqn/RtpRFaUHb7lZ+1uHIw43KrC001zvoZH6sCKAVUy:zztALupxRnaMbBZfC6rC0oUZasC

Malware Config

Targets

    • Target

      f131a0e946a38875adb5c6bbf024eca15ecbf9038be4febe09cb539190cd7062

    • Size

      245KB

    • MD5

      db58fe20918f027a03873fa02d6c8b2e

    • SHA1

      2d57885cc841b38dcd6173369607a895b3dfad8d

    • SHA256

      f131a0e946a38875adb5c6bbf024eca15ecbf9038be4febe09cb539190cd7062

    • SHA512

      75462c83355e1117be061072418761bf6bf4a0f7afcbe2d0289362cf2fe487108f78b5a000ef41a71657474cc2da9ed7fecb099d160dbc4d09189ec961bfb2ea

    • SSDEEP

      3072:4E26uUALupyqn/RtpRFaUHb7lZ+1uHIw43KrC001zvoZH6sCKAVUy:zztALupxRnaMbBZfC6rC0oUZasC

    • Detects Smokeloader packer

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • .NET Reactor proctector

      Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Executes dropped EXE

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Uses the VBS compiler for execution

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Scripting

1
T1064

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks